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7 Maintenance
7.1.7 Wear-and-Tear Parts of the KS1D Combination Probe
Average life cycle = 2 - 3 years (depending on fuel).
Recommendation:
Exchange the ZrO
2
measuring cell after 5 years at the latest.
A worn measuring gauge could cause errors while calibrating and therefore impede the pre-
cision of measurement.
The combination probe KS1D type 656R2000 with housing and type 656R2010 without hous-
ing can only be replaced completely
.For combination probe KS1D HT (high temperature) type 656R2015, a replacement kit is
available. Order no. 656R2065.
Probe dynamic response